Grinding-mill and pulverizer.



Nu. 864,444. PATENTBD AUG. 27, 1907.

J. W. BOILEAU. GRINDING MILL AND PULVER IZER.

APPLICATION FILED SEPT. 7,1906

8 SHEETS-SHEET 1 No. 864,444. PATENTED AUG. 27, 1907.

J. W. BOILEAU. GRINDING MILL AND PULVERIZER.

APPLICATION FILED SE .7,19O6- 3 SHEETSSHEET 2.

l/qh'tmeooeo No. 864,444. PATENTED AUG. 27, 1907.

J. W. BOIL-EAU.

- GRINDING MILL AND PULVERIZER. j

APPLICATION FILED snr'r. 7,1806- s SHEETS-SHEET s.

gmvem/boi flanges and theouter faces of the heads 5.

JAMES BOILEAU, OF DETROIT, MICHIGAN.

GRINDING-MILL AND PULVE RIZER.

Specification of Letters Patent.

Patented Aug. 27, 1907.

Application filed September 7,1906. Serial No. 333,70B

To all whom it may concern:

Be it known that I, JAMES W. BOILEAU, a citizen of.

the United States, residing at Detroit, in the county of Wayne and Stateof Michigan, have invented certain new and useful Improvements inGrinding-Mills and Pulverizers; and I do declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the .art to which it appertains to make and use thesame.

My invention is an improved grinding mill and'pulverizer, especiallyadapted for grinding or pulverizing mineral bearing rock, but alsoadapted for grinding or pulverizing other materials and substances, andit consists in the construction, combination, and arrangementof deviceshereinafter described and claimed.

In the accompanying drawings,-Figure 1 isa side elevation of a millembodying my invention; Fig. 2 is a vertical longitudinal sectional viewof the same; Fig. 3 is a vertical transverse sectional view of the same;Fig. 4 is a detail horizontal sectional view, showing the constructionof one of the bearings and of the guides therefor of the adjustableroller.

On a bed-plate 1 is secured a casing 2, which is provided with a.horizontal, transversely-extending cylindrical chamber 3, the saidchamber having heads 4 secured by bolts 5. In the lower side of thecylindrical chamber is a discharge opening 6 having a discharge spout orpipe 7. On the upper side of the said cylindrical chamber is a feedhopper .8. On the inner side of the cylindrical chamber is a fixedcylindrical grinding element 9, which is here shown as a chilled,castiron cylinder provided on its inner side with convex ribs 10, whichextend longitudinally thereof. Said cylinder 9 has a feed opening 11 atits upper side, and a discharge opening 12 at its lower side. The heads5 are provided with vertical central openings 13, and on.

the outer sides of said heads are vertical guides 14,

which are here shown as cleats bolted in place and formed .withinwardly-extending guide flanges 15, which engage adjustable bearingblocks 16, the said bearing blocks being slidable between the said guideOn the outer sides of the heads 5, above and below the openings 13, arebrackets 17, which are here shown as bolted in place.

They may be otherwise constructed and'secured within the scope of myinvention. The said brackets 17 are provided with guide s ckets for thereception of the outer ends of adjustin screwslS, the inner ends ofwhich are stepped in the upper-andlower sides of the bearing blocks 16.'On the said adjusting screws are adjustable nuts 19, which engage thebrackets 17 and may be turned on the screws 18 to cause the latter toraise or lower the bearing blocks 16, as may de desired.

An oscillating grinding roll 20 is disposed within the grindingcylinder, and is here shown as comprising an inner wheel memberzl and anouter cylindrical member 22, secured thereon by keys 23 and providedwith peripheral grinding ribs 24, which extend longitudinally thereofand coact with the grinding ribs of the cyliu dcr 9 to crush and reducematerial between them. wheel 20 is mounted on and keyed or otherwisesecured to a shaft 25, which extends through and is verticallyadjustable in the openings 13, has its hearings in the adjustablebearing blocks 16, and has ils olllcr ends squared, as at 20. Walkingbeams 27 have squared openings 28 at their centers to receive thesquared polygonal ends of the oscillating grinding roll shaft. The saidoscillating grinding roll is disposed eccentrically in the fixedgrinding cylinder with its lower side in contact or nearly so, with thelowor'sidc of the fixed grinding cylinder, and it will be uudersloodthat by means of the walking beams the oscillating grinding cylinder maybe operated. Owing to the polygonal form of the ends of the oscillatingroll shaft and of the openings in the walking beams, the latter may beshifted on the roll shaft to bring a new surface of the oscillating rollinto operative relation to the lower surface of the fixed inner grindingcylind 01-9, and hence when one portion of the surface of theoscillating grinding roll becomes worn from use, another portion. of thesurface thereof may be brought into requisition so as to prolong thelife of the said oscillating grinding roll.

Within the scope of my invention, any suitable means may be employed forworking the walking beams and causing the latter to operate theoscillating grinding roll. For the purposes of this specification I havehere shown suitable means for operating said walking. beams, which meansI will'now describe: The ends of the walking beams are connected byshafts 29 which have their bearings, as at 30, in the ends of saidwalking beams. Shafts 31 have their bearings, as at32, in standards 33,

-which are here shown as bolted at the ends of the bedplate. Each ofsaid shafts is provided with a crank 34. Pitrnen 35 connect the saidcranks to the centers of the shafts 29. Each pitrnan 35 islongitudinally ad justable so that it may be lengthened or shortened asmay be required to compensate for the vertical adjustment of theoscillating inner grinding roll. Each pitman to enable it to belongitudinally adjusted is composed of sections 34, 35, provided withreversely-threaded screw portions 36-, 37, connected together bytubularsleeve nuts '38, threaded to receive said screw portions 36, 37. On eachof the shafts 31 is secured a sprocket wheel 39. Said sprocket Wheelsare connected together by an endless sprocket chain 40, which causessaid shafts to rotate in unison. One of the said shafts 31 is alsoprovided with a drive wheel 41. From the foregoing description, taken inconnection with the accompanying drawings, the construction andoperation of the invention will be readily understood without requiringa more extended explanation.

Various changes in the form, proportion, and the The minor details ofconstruction may be resorted to without departing from the principle, orsacrificing any of the advantages of this inyention, as defined by theappended claims Having thus described my invention, what I claim as new,and desire to secure by Letters-Patent, is,

' 1. In a inill ofthe class described, the combination of a casinghaving a cylindrical grinding chamber, an osciliating cylindricalgrinding roll, mounted eccentrically in i 10 said grinding chamber,vertically adjustable bearings for 20 guides at opposite sides of saidchamber, an oscillating cylindrical grinding roll mounted eccentricailyin said grinding chamber' and having an axle shaft, verticallyadjustable bearings for the said shaft, mounted in the.guides of thecasing, means to adjust said bearings and hence also said grinding roll,a walking beam attached to the shaft of the roll, crank shafts, fixedbearings therefor, and

-longitudinally adjustablepitmen connecting the cranks of said shaftsand the said walking beam, substantially as described.

3, A mill of the grinding chamber grinding class described having acylindrical provided with an annular interior face, an oscillatinggrinding roll mounted eccenchamber and having a peripheral ing chamber,a shaft for said roll, and bearings fo s id shaft, said roil' beingangularly adjustable in said hearings. in testimony whereof I havehereunto set my ha d in presence of two subscribing witnesses.

JAMES W. BOILEAU.

\Vitnesses JosnPH T. BELANGER, IIAnvnrF. BELANGER.

It is hereby certified that Letters Patent No. 864,444:, granted August27, 1907,

upon the application of James W. Boileau, of Detroit, Michigan, for animprovement in Grinding-Mills and Pnlverizers, were erroneously issuedto said 'J ames W.

Boileanfias owner of the entire interest,

been issued to the inventor, Ja'meS Boileau, and Joseph T. Belanger, andEugene O. Spaulding, jointly} said Belanger, Cochrane,

assignees of one-sixth interest each in said invention, as shown whereassaid Letters Patent should have John L. Cochrane, and s iaulding beingby the .record of assignments in this ofli'ce; and that: the saidLetters Patent should be read with this correction therein that thesamemay conform to the record of the case in the Patent Signed andsealed this 19th day of hT ovembe r, A. D., 19Q7-.

[scan] E. B. MOORE,

Commissioner of Patents.

minor details of construction may be resorted to without departing fromthe principle, or sacrificing any of the advantages of this inyention,as defined by the appended claims Having thus described my invention,what I claim as new, and desire to secure by Letters-Patent, is,

' 1. In a inill ofthe class described, the combination of a casinghaving a cylindrical grinding chamber, an osciliating cylindricalgrinding roll, mounted eccentrically in i 10 said grinding chamber,vertically adjustable bearings for 20 guides at opposite sides of saidchamber, an oscillating cylindrical grinding roll mounted eccentricailyin said grinding chamber' and having an axle shaft, verticallyadjustable bearings for the said shaft, mounted in the.guides of thecasing, means to adjust said bearings and hence also said grinding roll,a walking beam attached to the shaft of the roll, crank shafts, fixedbearings therefor, and

-longitudinally adjustablepitmen connecting the cranks of said shaftsand the said walking beam, substantially as described.

3, A mill of the grinding chamber grinding class described having acylindrical provided with an annular interior face, an oscillatinggrinding roll mounted eccenchamber and having a peripheral ing chamber,a shaft for said roll, and bearings fo s id shaft, said roil' beingangularly adjustable in said hearings. in testimony whereof I havehereunto set my ha d in presence of two subscribing witnesses.

JAMES W. BOILEAU.

\Vitnesses JosnPH T. BELANGER, IIAnvnrF. BELANGER.

It is hereby certified that Letters Patent No. 864,444:, granted August27, 1907,

upon the application of James W. Boileau, of Detroit, Michigan, for animprovement in Grinding-Mills and Pnlverizers, were erroneously issuedto said 'J ames W.

Boileanfias owner of the entire interest,

been issued to the inventor, Ja'meS Boileau, and Joseph T. Belanger, andEugene O. Spaulding, jointly} said Belanger, Cochrane,

assignees of one-sixth interest each in said invention, as shown whereassaid Letters Patent should have John L. Cochrane, and s iaulding beingby the .record of assignments in this ofli'ce; and that: the saidLetters Patent should be read with this correction therein that thesamemay conform to the record of the case in the Patent Signed andsealed this 19th day of hT ovembe r, A. D., 19Q7-.

[scan] E. B. MOORE,

Commissioner of Patents.

Correction in Letters Patent No. 864.444.

It is hereby certified that Letters Patent No. 864,444, granted August27, 1907, upon the application of James W. Boiieau, of Detroit,Michigan, for an improvement in Grinding-Mills and Pulverizers, wereerroneously issued to said James W. Boiieau" as owner of the entireinterest, whereas said Letters Patent should have been issued to theinventor, James W. Boileau, and Joseph T. Belanger, John L. Cochrmw, andEugene O. Spaulding, jointly; said Beianger, Cochrane, and Spauldingbeing assignees of one-sixth interest each in said invention, as shownby the record of assignments in this oflice; and that the said LettersPatent should be read with this correction therein that the same mayconform to the record of the case in the Patent ()fiicl.

Signed and sealed this 19th day of November, A. D., 1907.

[SEAL] E. B. MOORE,

Commissioner 0 f Patents.

